diff --git a/docs/Python-API.md b/docs/Python-API.md
index c849f82f05..45efc2f77c 100644
--- a/docs/Python-API.md
+++ b/docs/Python-API.md
@@ -69,7 +69,7 @@ from mlagents_envs.environment import UnityEnvironment
 env = UnityEnvironment(file_name="3DBall", seed=1, side_channels=[])
 # Start interacting with the evironment.
 env.reset()
-behavior_names = env.behavior_spec.keys()
+behavior_names = env.behavior_specs.keys()
 ...
 ```
 **NOTE:** Please read [Interacting with a Unity Environment](#interacting-with-a-unity-environment)